Flush-valve.



G. LAMB.

FLUS H VALVE. APPLICATION FILED MAY 4. 1916.

Patented July 11, 1916.

2 SHEETS-SHEET I.

WITNESSES A TTOR/VEYS G. LAMB. FLUSH VALVE. APPLlCATlOfl FILEDMAY-1.1916.

Pdtented J ul y 11, 1916.

2 SHEETS-SHEET 2 5 8 8 M H W ATTORNEYS czsoacr. was, or NEW YORK, N. Y.

FLUSH-VALVE,

." Specification of Letters Patent. Patented July 11, 1 916,

' Application filed May 4, 1916. semi No. 95,853.

Toallrwhom it may concern:

Be it known that I,- Gnonen LAMB, a citizen of the United States, and aresident of the city of New York, borough of Brooklyn, in the county ofKings and State of New York, have invented a new and ImprovedFlush-Valve, of which the following is a full, clear, and exactdescription. I This invention relates to flushvalvesespeciallyadaptedfor water closets of vari- A more specific object of the invention isthe provision of a flush valve embodying a hollow metal ball and arubber seat of special design, whereby tight seating is maintained andthe objections found in other valves overcome, the ball being reversiblyattached to its stem, so thatif the lower half should become dented orotherwise imperfeet the ball'can be reversed and the upper half used toengage the rubber seat.

Still another object is the provision of a T combined guide cage for thefloat ball and r In the accompanying illustrate one embodimentof'the-invention clamp for the rubber seat, whereby the latter isheld'efl'ectively in place and capable of i fitting.

With such which will'appear as the description pro- I parts which willbe set forth with particuadapting itself to the valve for water-tightobjects in view, and others ceeds, the invention comprises various novelfeatures of construction and arrangement of larity in the followingdescriptionand claims appended hereto. v

' drawings, which and wherein similar characters of reference indicatecorresponding parts in .all the views, Figure 1 is a central verticalsection of the flush valve applied toa tank; Fig. 2 is a horizontalsection on the line ,2-2, Fig. 1;

Fig. 3 is a horizontal section taken on the line 33,-'Fig. 1; and Fig. 4is a perspective view of the valve seat.

Referring to the drawing, A designates an ordinary water closet tank ofthe high or low type in which-is arranged the flush any suitablematerial and it is provided with a chamber 2 which has a laterallyextending hollow arm 3 for receiving the overflow pipe 4. The chamber 4is provided with a lower internal annular flange 5 and an upper internalannular flange 6, and under the flange 5 the open bottom of the casingis provided with an internal'thread 7 into which screws a spud 8, thediameter of which may be varied according to the style of water closetvalve B. This-valve embodies a casing 1 of in which the valve isv to beused. Between the top of the spud and the flange 5 is a packing ring 9.Rising from the top of the valve body is a cylindrical flange 10internally threaded to receive the externally threaded base ring 11 ofthe cage 12.v Within the top of the valve casing is an annular rubberseat 13 for the ball valve 14. This mately cylindrical shape and has anexternal annular flange 15 which is clamped between the base ring 11 ofthe cage and the seat is in the form of a ring of approxiseat'formed bythe flange 6, there being interposed' between the base ring of the cageand clamping flange 15 of the 'ball valve seat, a metal washer 16. Thevalve 14 is in the. form of a hollow metal sphere and slightly larger indiameter than the normal internal diameter of the cylindrical rubberseat 13, and when the ball valve or float drops it enters thecylindrical valve seat and makes a tight engagement therewith, the

valve seat slightly expanding in all directions under the weight of thevalve and attached parts, and the water acting on the valve. The basering 11 is of larger internal diameter than the external diameter ofthe" cylindrical valve seat, so as to provide clearance for the lateralexpansion of the latter. The valve seat is --a staple articlein theplumbing trade, being used as a water closet flush-spud washer, so thatit is possi ble for a householder to readily obtainsuch a washerandsubstituteit for a Worn flush valve seat whenever occasion requires.

The ball valve or float 14 is suspended on the lower end of a stem 17which screws into an internally threaded nipple 18, there being such anipple both at the top and bottom. -The lower nipple forms a. drain forany liquid which might accumulate in the ball float. Furthermore, byproviding two nipples it is possible to reverse the ball valve wheneverthe lower half becomes imperfect,

and does not properly seat. This reversal is easily accomplished byunscrewing the stem, turning the valve over, and again screwing in thestem. The valve stem is guided through a bearing19 at the point ofjuncture of the vertical arched bars which form the cage 12. These barsof the cage form a convenient gripping means for enabling the cage to bescrewed into or unscrewed from the casing of the valve, as

when anew valve seat is to be inserted. It

will thus be seen that, no special tools are required, and any person ofordinary skill can keep the flush valve in operative condition. The stem17 is connected with suitable operating means'for lifting the valvewhenever the water is to discharge from the tank.

By reason of the special construction of the valve seat the flush valvewill be maintained in operative condition for a great length of time andavoids the annoyance of frequent repair, as in ordinary flush valves nowin use. Furthermore, the valve is simple in construction, noiseless inaction and is adaptable for the various styles of water closets andtanks now in common use.

From the foregoing description taken in connection with the accompanyingdrawings, the advantages of the construction and method of operationwill be readily understood by those skilled in the art to which theinvention appertains, and while I have described the principle ofoperation, together with the device which I now consider to be the bestembodiment thereof, I desire to have it understood that the deviceshown, is merely illustrative and that such changes may be made whendesired as fall within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A float valve comprising a chambered casing through which water isadapted to flow, a valve seat of cylindrical form and expansible indiameter at its upper end, a cage having a screw connection with thecasing and clamping the valve seat in place, the body of the cageforming a handle for facilitating the screwing and unscrewing of thecage, a ball valve disposed in the cage and engageable with the seat,and a stem connected with the valve and wardly therefrom, the top of thecage having a guide through which the stem extends.

2. A flush valve comprising a chambered casing through which water isadapted to flow, a cylindrical rubber valve seat yieldable laterally atits top edge and having an annular flange at its bottom, means forclamping the flange tightly against the valve casing, and a ball valveadapted to enter the seat 'and engage the top edge thereof.

3. A flush valve comprising a chambered casing through which water isadapted to flow and having an internally threaded flange at its top, aring screwing into the flange, a rubber valve seat of annular formdisposed within the ring and of less diameter than the same and havingan annular flange clamped between the ring and valve casing, and a rigidball valve engageable internally of the seat.

4;. A flush valve comprising a chambered casing through which water isadapted to flow and having an internally threaded flange at its top, aring screwing into the flange, a rubber valve seat of annular formdisposed within the ring and of less diameter than the same and havingan annular flange clamped between the ring and valve casing, and a rigidball valve engageable internally of the seat, said ring having a cageextending upwardly therefrom for guiding the ball valve and forming ahandle for the screwing and unscrewing of the ring.

5. A flush valve comprising a seat, a ball of slightly larger diameterthan the seat and engageable therewith, a stem, and separate means atdiametrically opposite points on the ball for permitting the latter tobe reversed for connection with the stem.

6. A flush valve including a hollow metallic ball having aperturednipples at the top and bottom, the lower nipple forming a drain and theupper nipple forming means for connection with an operating stem.

: GEORGE LAMB.

extending up-

